MVI56E-MNETC ♦ ControlLogix Platform
Glossary of Terms
Modbus TCP/IP Multi Client Enhanced Communication Module
Setup Guide
ProSoft Technology, Inc.
Page 67 of 72
April 18, 2011
Glossary of Terms
A
ASCII
American Standard Code for Information Interchange. A communication mode in
which each eight-bit byte in a message contains one ASCII character code.
ASCII characters (or hexadecimal characters) are sometimes used as a key to
encrypt data and ensure its secure transmission.
C
Client
A client is a software program, or the device on which that program runs, that
makes requests for information from a software program, or the device on which
that program runs, in a client-server relationship.
A Client on an Ethernet network is equivalent to a Master on a serial network.
D
Default Gateway
The IP address of a network router where data is sent if the destination IP
address is outside the local subnet. The gateway is the device that routes the
traffic from the local area network to other networks such as the Internet.
E
ESD
Electrostatic Discharge. Can cause internal circuit damage to the coprocessor.
Ethernet
A set of network cabling and network access (CSMA/CD) protocol standards for
bus topology computer networks invented by Xerox but now controlled by the
802.3 subcommittee of the IEEE.
F
Firmware
Software for embedded computers.
Full-Duplex
A communications circuit or system designed to simultaneously transmit and
receive two different streams of data. Telephones are an example of a full-duplex
communication system. Both parties on a telephone conversation can talk and
listen at the same time. If both talk at the same time, their two signals are not
corrupted.
